Pendulum balloon logging system : dynamic model PublicDeposited

Descriptions

The purpose of this paper is to determine the dynamic tensions
that occur in the guyl ines and pendulum lines of a tethered logging
bal loon. A scale model was used to represent the tethered logging
balloon.
During the swinging of payloads, line tensions followed a very
predictable sinusoidal curve. It was determined that the maximum
balloon displacement will occur when the payload is being lifted
off the ground. The maximum balloon displacement corresponds to a
worst case position for the system as a whole. The maximum dynamic
tensTon that will occur in the pendulum line represented only a
5-10 percent. increase over the static tension to initially lift the
payload off the ground.